1,721,155 research outputs found
Exploring new boundaries for E-learning: Multicasting via satellite
No full textIn order to manage successful virtual distance learning programs (higher) education institutes should implement multimedia enriched learning materials which can be used in multiple environments/situations. This not only opens up new markets but also gives teachers and learners flexible access to rich online learning resources, leading to new pedagogic practice and giving students better preparation for the challenges of the workplace. However, several studies have reported frustrations with learners and educators due to technical problems, particularly the lack of broadband capacities. This paper describes an innovative IF' multicasting approach to take advantage of video and multimedia elements that are commonly difficult to deliver over the Internet. The Content Conductora, an open and modular framework, provides a platform for fully integrated provisioning and service management of multicast communications and allows the seamless integration of different types of hardware equipment and application software. As a result of the unique characteristics of this system, broad e-learning modalities become available and manageable.sponsorship: Goeman K., de Gruyter B., Mannaert Herwig , de Vos E..- Exploring new boundaries for e-learning: multicasting via satellite
, February 2003 - ISBN 0-7803-7661-7 - Papeete, 2003status: Publishe
Proceedings of The Eleventh International Conference on Mobile, Hybrid, and On-line Learning, February 24 - February 28, 2019, Athens, Greece
No full textOn the evolvability of the TCP-IP based network firewall rule base
No full textAbstract: A firewall is an essential network security component. The firewall rule base, the list of filters to be applied on network traffic, can have significant evolvability issues in a context where companies consider their firewall as complex. While sufficient literature exists on how to analyze a rule base, little research is available on how to properly construct a rule base upfront which prevents the occurrence of evolvability issues. According to Normalized Systems theory, a system is unstable under change if changes require an effort that is proportional to the type of change and the size of the system. A system that is unstable under change is considered non-evolvable. The issue with firewall changes relates to this instability under change. By analyzing the root cause of the evolvability issues and proposing design criteria making use of Normalized Systems theory, we attempt to solve the evolvability issues of TCP/IP-based firewalls. This work presents a set of design criteria to create an exante proven evolvable rule base, as well as an algorithm which performs an essential step in converting an existing non-evolvable rule base into an evolvable rule base
PATTERNS 2025 : The Seventeenth International Conference on Pervasive Patterns and Applications, April 6-10, 2025, Valencia, Spain
No full textDesign of modular structures for evolvable and versatile document management based on normalized systems theory
No full textAbstract: Despite technological and operational business advances over the past decades, organizations are still required to draft and manage documents. These documents can take a plethora of forms, such as books, spreadsheets, slide decks, manuals, legal contracts, emails, reports, etcetera. Although a lot of these documents have taken an electronic form, their structure is in essence still the same as their analogue and physical predecessors. Invoices are often just printed and sent by mail, after which they are opened and scanned by the receiving organization. Or instead of printing and handing out new operational procedures, they are often just exported as a pdf-file and saved on a server. Despite the endless opportunities the revolution in Information Technologies (IT) has brought along, most efforts in document management were limited to just digitizing documents, i.e., transforming them from analogue to digital form as monolithic blocks. In addition, document management is faced with challenges such as content customization, the challenge to convert documents into value-adding products or services, repurposing internal documents for use on the internet and the management of the mountain of documents that are created daily. In this dissertation, we show how this view of static documents that are a mere representation of their analogue predecessors is out-of-date. Instead, we present a view of multidimensional and ever-changing documents, based on the insights from modularity and Normalized Systems reasoning. An essential concept of our document management approach is that one has to consider the underlying artifacts that are described in documents. The structure of these artifacts is unconditionally connected to the structure of the documents they are described in. For documents to be modular and evolvable, one should therefore always first analyze its underlying artifacts. Ideally, the effort of modularizing documents in an effort to make them evolvable should be preceded by going through the same process for the described artifacts (although this is not a requirement). The practical implications of this approach are discussed based on a case study of a document management system for study program documentation. To demonstrate the feasibility of our document management approach, a proof of concept application was developed
PATTERNS 2021 : the thirteenth International Conference on Pervasive Patterns and Applications, April 18-22, 2021, Porto, Portugal
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Proceedings ICSEA 2023 : The Eighteenth International Conference on Software Engineering Advances, November 13-17, 2023, Valencia, Spain
No full textTowards a normalized systems gateway ontology for conceptual models
No full textAbstract: In software engineering, conceptual modelling is a technique for describing a problem domain related to a software system. Although its primary purpose is to promote human understanding and communication, conceptual models can be (re)used to generate the desired software systems or their fragments. Normalized Systems (NS) describe how to create enterprise software systems by utilising code generation for evolvability and sustainability. It uses modelling of the so-called Elements \u2013 building blocks ensuring evolvability. This dissertation thesis designs a solution to transform conceptual models into Normalized Systems (and vice versa) while maintaining mutual consistency. The Gateway Ontology designed on the basis of RDF technologies provides means to define the mappings between arbitrary conceptual modelling languages and Normalized Systems. It supports different types of modelling and enables semantic integration between various models. The thesis also covers the design and implementation of transformation execution that allows one to transform models of selected modelling languages. The overall solution considers evolvability on multiple levels \u2013 adopting changes in tools, models, metamodels, and mappings. According to the Design Science Research methodology, the research artefacts were refined and evaluated in design cycle iterations while confronted with the knowledge base and the NS environment. As part of the evaluation, we demonstrate several use cases with different conceptual models, their integration, and transformation into NS
What Do Critical Success Factors of Collaboration Really Mean in the Context of DevOps?
No full textCollaboration is an important aspect of DevOps. However, researchers continue to report problems with collaboration between development and operations. Critical Success Factors (CSFs) may contribute to solve these problems. Prior research found CSFs of collaboration. Yet we did not find any comprehensive list of CSFs of collaboration grounded in DevOps practice by real-life examples making them meaningful in that context. Therefore, we aim to show that CSFs of collaboration found in other contexts are also recognized in a DevOps context and what previously validated generally applicable CSFs of collaboration really mean in a DevOps context. The research method comprises of a systematic literature review to find a comprehensive list of generally applicable CSFs of collaboration, a multiple case study to find on the one hand which of these CSFs were recognized in a DevOps context and on the other hand to find real-life examples, which substantiated the CSFs recognized. Finally, the aim is to develop a classification of the CSFs. Our main contribution to theory is a well-founded and structured list of CSFs meaningful for the DevOps profession. The list of CSFs can aid practitioners to have a necessarily impact on the success of collaboration
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